### Bug or Regression

- Fixes a spurious "namespace not found" error possible in default configurations in 1.30+ when using ValidatingAdmissionPolicy or MutatingAdmissionPolicy to intercept namespaced objects in newly-created namespaces ([#135359](https://github.com/kubernetes/kubernetes/pull/135359), [@liggitt](https://github.com/liggitt)) [SIG API Machinery]

    void initTable(AtomicReferenceArray<ReferenceEntry<K, V>> newTable) {
      this.threshold = newTable.length() * 3 / 4; // 0.75
      if (!map.customWeigher() && this.threshold == maxSegmentWeight) {
        // prevent spurious expansion before eviction
        this.threshold++;
      }
      this.table = newTable;
    }

    @GuardedBy("this")

picked her way through the wood.  `It's the stupidest tea-party I
ever was at in all my life!'

  Just as she said this, she noticed that one of the trees had a
door leading right into it.  `That's very curious!' she thought.
`But everything's curious today.  I think I may as well go in at once.'
And in she went.

  Once more she found herself in the long hall, and close to the
little glass table.  `Now, I'll manage better this time,'